Speed Bump

Your Phone’s Music: Now a Running Coach

You’ve polished off the last of the holiday sweets. Engaged in egregious acts of
couch-centered sloth. Enjoyed a full week of pizza-breakfasts.

It’s been fun. But it’s time to get fit.

Let’s start small. Say, running. To music that automatically adjusts tempo based on your own.

Loosen the hamstrings for Cruise Control: Run, an app that causes your phone’s music to mirror
your jogging pace, available now for iPhone.

This is sort of like if your DJ were also your running coach. With this app, your phone’s music will match
the tempo of any run. Be it an Usain Bolt–style tempo, or more of an “I really need to lay off the
bratwurst” tempo.

Start by putting on running shorts. (If you don’t own running shorts... get some.) Then, pull up this app
on your phone and start jogging. If you’re jogging slowly, it’ll play slow music. If you speed up,
it’ll speed up your music.

And if you’d prefer to run at a particular speed, you can select songs and organize playlists that all
contain the same beats per minute. It even maps out the routes and distances of your runs to track your
progress.